Question Number 40815 by Necxx last updated on 27/Jul/18
$${Calculate}\:{the}\:{magnetic}\:{force},{F}_{{b}} \:{on} \\ $$$${an}\:{electron}\:{with}\:{velocity},{v}=\mathrm{20}\hat {{j}m}/{s} \\ $$$${which}\:{enters}\:{a}\:{magnetic}\:{field}\:{of} \\ $$$${flux}\:{density},{B}=\mathrm{0}.\mathrm{6}\hat {{k}T} \\ $$
Answered by tanmay.chaudhury50@gmail.com last updated on 28/Jul/18
$${F}_{{b}} ={q}\overset{\rightarrow} {{V}}×\overset{\rightarrow} {{B}} \\ $$$$\:\:\:=\left(−{e}\right)\mathrm{20}\overset{\rightarrow} {{j}}×\mathrm{0}.\mathrm{6}\overset{\rightarrow} {{k}} \\ $$$$=−\mathrm{12}{e}\overset{\rightarrow} {{i}} \\ $$
Commented by Necxx last updated on 28/Jul/18
$${Thank}\:{you}\:{sir} \\ $$